Covering.



PIIIIIIIIQI Feb l. H. MUNRO.

COVERNG.

APPLICATION FILED Nov.I2. I9Io.

JAMES H. MUNRO, OF NEWARK, NEW JERSEY.

oovEnrNG.

Specification of L'etters Patent.

Patented Feb. 29, 1916.

Application filed November 12, 1910. Serial No. 592,090.

To all whom it may concern:

Be it known that I, JAMES H. MUNRO, of Newark, New Jersey, have inventedcertaln Improvements in Coverings, of which the following description,in connection with the accompanying drawings, is a specification, likeletters on the drawings designating like parts.

This invention relates to coverings for surfaces such as floors, walls,ceilings, roofs and pavements, and is of particular utility when appliedto ioors or pavements requiring an effective and permanent covering ofinexpensive original cost. and upkeep, although I contemplate the use ofmy invention in any field for which it is adapted by its nature.

An important object of my invention is to provide tessellze withrecesses, to be embedded in suitable material such as pitch, the latteroozing-up into the recesses instead of exuding between the tessellae,this opening up to a new use the well-understood pitchy cements whichare in such general use with other forms of covering, of a lesspermanent character.

Heretofore, on account of the tendency of pitch to become soft atrelatively low temperatures, and to ooze up through the joints of thecovering units, pitch has not been available for floors, pavements andsimilar situations where the dark color of the pitch would mar theappearance of the surface and cause obiects to adhere thereto.

Among other important objects of my invention is the formation of thesetessellae of cement in sheets on flexible material. such as burlap,whichjoin the tessellae and permit them to be laid in unit sheets ofseveral feet in length.

Still other important objects of my invention comprise the provision ofmeans to hold the covering of recessed tessell in place upon inclinedsurfaces; and also means to permit the units to be rolled up fortransportation and storage, as well as to adapt them to curved or warpedsurfaces.

The various features of my invention will be illustratori and describedfullv in the accompanying drawings and specification and 'pointed out inthe claims.

In the drawlngs, Figure l is a plan view of portion of a covering in theconstruction of which my invention has been embodied; Fig. 2 is a viewof a portion of a similar covering in vertical section, on an enlargedscale, taken on the line @v2-wz, Fig. 1, and showing the covering inplace. Fig. 3 is a view in vertical section showing a portion of mycovering in place upon a roof, and illustrating the preferred mode ofsupport in such installations; Fig. 4 is a view in end elevation of aunit of covering rolled up for storage or transportation.

In the embodiment of my invention selected for illustration anddescription to permit ready and complete understanding of myimprovements, the parts designated by the reference numerals 1, 2, 3 and4 are tessell of cement, formed in place upon a vehicle 5 of suitablefabric, such as burlap, the tessellae having in accordance with animportant feature of my invention, recesses 6, to receivethecementitious substance 7, in which the tessellae' are embedded, andwhich may be of any suitable material, preferably pitch, as that ischeap and its qualities are well understood by those skilled in the artof laying such coverings.

`When the tessellae are pressed into the bedding, the pitch 7 findsaccess tothe recesses 6 which may be of the same general contour as thatof the individual tessellacor may be of any suitable contour.

The recesses 6 will preferably be of suitable area and depth, and solocated as toinsure their reception of enough cement to avoid any unduetendency of the latter to exude to the surface of the covering at thejoints between the tessellae.

The thickness, composition and proportions of the tessellae may varywith the requirements of individual installations and as one convenientarrangement I have shown the tessellae l, 2 and 3 as formed bycompressing the cement on both sides of the layer of burlap 5, themeshes of that material being usually sufficiently coarse to permit anintegral union of the upper and lower parts of the tessellae, which mayif desired be formed as indicated of somewhat finer material in the partexposed, and below the burlap of a material of coarse character whichwill unite readily with the bed 7 of such -material as pitch, the latterbeing laid on any suitable support 8.

As one variation from the above forni of.

tessellae, they may be formed substantially as shown at l in Fig. 2,somewhat dished tachment for the covering 91 which is of particularutility when laid upon a slanting surface-such as'the roof shown at 98,and

to hold the covering from sliding down, I

prefer to provide a suitable form of foundation 97 which' may be securedto the roof, as by nails 99. and furnished with projections such as theintegral knobs or stri s 100, or separately formed disks 101 may beutilized, being transfixed by the nails 99, these projections, whatevertheir character, being constructed and arranged to enter the recesses 6,the tessellee being of any suitable construction, herein shown assi-milar in essential respects to the tessell shown and described withreference to Fig. 1.

By forming the cement tessellae 1, 2, 3,

etc., upo-n a flexible connecting material 5 such as burlap I am enabledto roll up the sheets or strips of tessellae as indicated in Fig. 4,forstorage and transportation, thus affording a very convenient form ofpackage.

Having illustrated and described my invention thus fully, and suitablemeans for carrying the same into efect, I wish it to be understood thatI do not limit myself to the specific materials or construction shownand described by way of example, nor in general do I limit myselfotherwise than as set forth in the claims, read in connection with thisspecification.

That I claim as new, and desire to securey by Letters Patent of theUnited States of America, is

1. A cement covering for floors, Walls,

land similar surfaces; said metho ing the steps of molding a sheet ofrefrac? hicle, and laid in a plastic bedding, said.

covering being molded supercially to Jform a wear-resisting surfacepresenting the effect of a multiplicity of tessellae, and said tessellaehaving their lower margins beneath said vehicle beveled away from theirproximate edges to form cro-ss channels to receive the bedding'vmaterial and distribute it to said edge Junctures, the lines offracture, both lateral and transverse, being'predev termined by saidmolding.

2. The novel method of forming a cement covering for floors, Walls,roofs, avements compristory cement superficially upon a flexible vehicleto form a Wear resisting surface presenting the effect of a multiplicityof tessell, with the lower `margins beneath said vehicle beveled awayfrom their proximate edges to form cross channels; curin said sheet; andlaying said sheet in a plastic bedding; said cross channelsserving toreceive the bedding material and distribute it to the edge junctures ofsaid tessellee, the lines of fracture of said sheet both radial andtransverse being predetermined by said molding.

Signed at Newark in the count of Essex and State of New Jersey this 2 ndday of October, 1910.

JAMES H. IMIUNRO.

Witnesses:

HERMAN M. BUEHLER, MAURICE FADEN.

